Take a look at a color wheel.
They compliment each other.
Like Doc said, the render is just kind of throwing it off, but not a big deal.

Heh.

It's like..you go outside and look at the trees when they start to turn in fall.
Oranges, yellows, and greens. Do you look at them and say:
"THAT DON'T MATCH EWW"
Not me. Still a beautiful part of nature.